Locomotive-frame.



No. 657,230. Patented Sept. 4, |900. D. A. WlGHTMAN.. LCOMUTIVE FRAME.

(Application led June 28, 1900.,

(No Model.) 2 Sheets-Sheet I.

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No. 657,230. Patented Sept. 4, |900.

D. A. WIGHTMAN.

LDCOMOTIVE FRAME.

(Application filed June 28, 1900.)

(No Model.) 2 Sheets-Sheet 2.

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DANIEL A. WIGHTMAN, OF PITTSBURG, PENNSYLVANIA- LOCGMOTEVE-FRAIVIE.

SPECIFCATION forming part of Letters Patent No. 657,230, dated September4, 1900. Application filed Tune 28,1900. Serial No. 21,884. (No model.)

T0 @ZZ 'whom it may concern:

Be it known that I, DANIEL A. WIGHTMAN, of Pittsburg, in the county ofAllegheny and State of Pennsylvania,have inventedacertain new and usefulImprovement in Locomotive- Frames, of which improvement the following isa specification.

The object of my invention is to provide simple, strong, and inexpensivemeans for connecting together and bracing the forward portions of theside members of a locomotiveframe and for securing the cylinder-saddlesmore firmly thereto than heretofore and transferring to the frame aportion of the strain which has ordinarily been sustained by thecylinders and their saddles.

The improvement claimed is hereinafter fully set forth.

In the accompanying drawings, Figure 1 is a plan or top view of theforward portion of a locomotive-frame and the connected lefthandcylinder and saddle, illustrating an application of my invention, thelower half of the figure being in horizontal section on the line a ct ofFig. 2 and the right-hand cylinder and saddle being omitted to promoteclearness of illustration; Fig. 2, a vertical longitudinal centralsection; Fig. 3, a transverse section, the left-hand half being taken onthe line b b of Fig. 2 and the right-hand half on the line c c of Fig.1; Fig. 4, a transverse section at the line d CZ of Fig. 2; Fig. 5, aplan or top view of the cylinder brace-plate detached, and Fig. G avertical longitudinal section at the line e c of Fig. 1.

The main portion of each of the side members of the framethat is to say,that portion which extends from the front pedestal to the rear end ofthe frame-is herein shown as of the construction ordinarily heretoforeemployed, consisting of a rectangular mainframe bar or rail 1, havingdownwardly-depending pairs of jaws or pedestals 2, the pedestals of eachaxle being connected by intermediate pedestal-braces 3 to those of thenext axle and being provided with removable shoes 4..Downwardly-projecting members 5,whieh serve as saddle-bearings, againstwhich the cylinder-saddles'abut on their rear sides, are formed upon theforward ends of the mainframe bars 1 and are connected at their lowerv.ends to the forward pedestals by horizontal lower bars 6, continuousrigid vertical bearings or abutments for the saddles being thus providedand the portions of the main frame in advance of the forward pedestalsbeing made integral rectangular structures. The forward portion of eachof the side frame members, to which the adjacent cylinder-saddle 7 isconnected and which may be termed the cylinder-section ofthe frame, iscomposed of an upper frame bar or rail 8, secured to the main-frame bar1 by bolts 9 and keys 10, and a lower frame bar or rail 11, secured tothe lower bar 6 of the main frame by bolts 12 and keys 13. Theframe-bars 8 and 11 extend forward horizontally fora sufficient distanceto admit the cylinder-saddles, at the front of which they are extendeddownwardly and upwardly, respectively, for sufficient distances eitherto abut on their adjoining faces or, preferably, as shown, to iit trulyagainst the upper and lower sides of an interposed transversefront-brace-plate 14. The framebars Sand 11 and front brace-platel 4extend longitudinally in front of the saddles to a suitable bumper-beam,to which they are secured at their front ends. A

A transverse cylinder brace-plate l5 extends across the frame below thecylindersaddles 7, its front end being in or about in line with thefront thereof and its rear end being located as close to the inside ofthe forward jaws of the front pair of pedestals 2 as will properly-clearthe inner flanges of the driving-'axle boxes. The upper and lower facesof the brace-plate 15 are finished truly at and near its sidesApreferably with shoulders at the inner sides of the finished portions,and said brace-plate is fitted and secured between flanges or brackets16, formed on the inner sides of the lower bars 11 of thecylinder-section of the frame,and corresponding anges or brackets 17 onthe inner sides of the lower bars 6 of the main frame. The brace-plate15 is rigidly connected to the frame-bars (i and 11 by the keys 13, bythe bolts 12, by bolts 18, passing through it and through the flanges 16and 17, and by bolts 19, passing through it and through the iianges 16.The cylinder-saddles 7 may be secured to the bars 8 and 11 of thecylinder-section IOO of the frame in the usual or any approvedconstitute a strong brace for the bumpermanner and are independentlysecured Vvto the cylinder brace-plate 15 by bolts 20.

A rectangular slot 21 may be formed centrally in the plate 15 near itsrear end for the purpose or allowing the back end of the equalizer inlocomotives having two-wheeled truck-s to project through sufficientlyfar for the attachment ofthe equalizer-hanger.

The cylinder brace-plate 15 is, it will be observed, located nearly inthe horizontal plane of the axes of the cylinders 22, thus relieving theupper frame-bars o'f a substantial portion of the strain whichvtheyordinaril-y sustain. leading directly to the cylinder-saddles, which areconnected to it both independently of the frame-bars and intermediatelythrough sai-d bars, and a portion of the strains ordinarily sustained bythe splice-bolts is thereby transferred to the main frame, thusmaterially strengthening the frame and cylinder connections, which is amatter of-substantial importance in large engines hauling extremelyheavytrains, as in present approved practice. The plate 15 also constitutes arigid longitudinal and transverse brace extending back from the front ofthe saddles as nearly tothe first driving-axleas practicable.

In the instance exemplified my improvement is described and shown asapplied in, connection with cylinders of the type which is nowpractically standard---that is to say, z in which each lcylinder is castintegral with a saddle, the two saddles abutting and being securedtogether in the vertical longitudinal: central plane of the locomotiveand having: their `upper faces curved in conformity with the smoke-box,which is supported upon and l It will, however, be appar--l ent that myinvention is equally applicable in locomotives having a centralbed-plate or v bolted thereto.

saddle and separate cylinders secured to each side thereof, aconstruction which is in use to a comparatively-slight extent. Itherefore use the term saddles herein as referring to the member whichis intermediate of the cylinders, whether the same is composed of Atwoparts each integral with one of the cylinders or is a single castinghaving a separate cylinder secured to each of its sides,

said two constructions being so far as myinvention relates theretomechanical equivalents.

The front brace-plate 14 is fitted between lateral iianges 23, formed onthe lower portion Vof the upper bar 8 of the cylinder-section of `theframe, and similar flanges 24 on the upper portion vof the lower bar 11thereof and is rigidly secured thereto by bolts 25.

The flanges 23 and 24 are turned upwardly:

and downwardly, respectively, at their front ends, so as to afford awide bearing for the entire depth of the frame-bars 8 and 11v againstthe rear side of the bumper-beam, against which the front brace-plate 14also abuts throughout its entire width, so as to The plate l5 forms anadditional tie beam substantially from one end thereof to the other. AAsuitable center casting 25 for the reception of the center pin of thetruck may be secured to the plate 14.

Vhile it will be obvious that an ordinary wooden bumper-beam may, ifdesired, be employed, the bumper-beam is, in order to inz sure greaterstrength and rigidity in the front portion of the frame, preferably acomposite metal structure formed of two transverse channels 26, havingtheir tlangesturned outwardly and separated by interposeddistanceblocks27 and connected to the front framebars 8 and 11 andbrace-plate 14 by anglebars 28 and bolts or rivets 29. The bumperbeam isfurther sti'ffened by upper and flower plates 30 3l.

AThe construction above described imparts greatstrength and stiffness tothe forward portion of the frame and the connections of thecylinder-saddles thereto. The attachment of the cylinder-saddles tothe'frame lintermediately through the cylinder braceplate additionallyto the ordinary direct connections andthe bracing of the cylinders bysaid plate close vto the line of strains in service materially lessensthe liability to breakage of cylinders or looseness of connectingbolts,which has heretofore obtained to such an extent as to result in frequentand-considerable damage and expense.

I claim as my invention and desire to secure by Letters Patentf l. Ina'locomotive-frame, the combination of twomain-frame side members, apair of cylinders having interposed saddles, a'transverse cylinder-framebrace extending below thesaddles, from the front thereof to or near theforward pedestals of the frame, connections securing the cylinder-framebrace 'to the side frame members, and connections in-- dependentlysecuring the cylinderframe brace to the saddles.

2. In a locomotive-frame, the combination of two main-frame sidemembers, 'a pair of cylinders having interposed saddles, a transversecylinder-frame brace located adjacent to the horizontal plane of theaxes of the cylinders and extending from the front of the saddles to ornear the forward pedestalsof the frame, connections securing thecylinderframe brace to the side frame members, and

connections independently securing the cylinder-frame brace to thesaddlesa 3. Ina locomotiveframe,'the combination of two main-frame sidemembers,two forward f-rame bars or rails, and a transverse cylinderframebrace, interposed at its sides between,- and vconnected to, themain-frame side members and the forward frame-bars, and extending fromthe plane of the front of the saddles to or near the forward pedestalsof the frame.

4. In a 'locomotive-frame, the combination of two main-frame sidemembers, each havinga lower horizontal ange on its inner side, twoforward frame bars or rails, each having ICO IIO

an upper horizontal flange on its inner side, and a transversecylinder-frame brace interposed at its sides between, and connected to,the flanges of the main-frame side members and of the forwardframe-bars.

5. In a locomotive-frame, the combination of two main-frame sidemembers, upper and lower forward frame bars or rails, secured to theside frame members and having horizontal flanges on their adjacentfaces, and a transverse front brace-plate, interposed at its sidesbetween, and secured to, the flanges of the forward frame-bars, andextending from the front ends thereof to or near the plane of the frontof the saddles.

6. In a locomotive-frame, the combination of two main-frame sidemembers, upper and lower forward frame bars or rails secured to the sideframe members, a transverse front braceplate interposed at its sidesbetween, and secured to, the forward framebars, and extending from thefront end thereof to or near the plane of the front of the saddle, abumper-beam composed of two channel members and interposeddistance-blocks, and angle-bars secured to the front brace-plate and tothe adjacent channel member of the bumper-beam.

7. In a locomotive-frame, the combination of an upper main-frame bar orrail, downwardly-depending jaws or pedestals, a vertical saddle-bearingprojecting downwardly from the upper main-frame bar, at the forward endthereof, and a lower frame bar or rail connecting the lower end of thesaddlebearing with the adjacent jaw.

8. In a locomotive-frame, the combination of an upper main-frame bar orrail, downwardly-projecting-jaws or pedestals, a lower main-frame bar orrail projecting in advance of the forward jaw, and a vertical memberinterposed between and connecting the forward ends of the upper andlower main-frame bars, and forming therewith and with the forward jaw,an integral rectangular structure.

D. A. VVIGIITMAN.

